There seem to be no protective components, like an RCBO. One has to assume that if one was to plug this in one would have to make sure the inlet already has all the required protections in place.

Anyone with a keen interest should probably really dig into the board manual to figure out how the things are connected and how to limit the current of the device. There seems to be more than one way to do that. The way it's done in these pictures seems dubious. Perhaps there's a better way?